South Korean authorities have arrested President Yoon Suk Yeol, who faces charges of insurrection following an attempt to impose martial law Yoon is now at the Corruption Investigation Office (CIO) - he said he agreed to the interrogation "even though it is an illegal investigation, in order to prevent any unsavoury bloodshed" Authorities served the warrant after an hours-long standoff with his security staff and supporters, which saw investigators using ladders and wirecutters to enter Yoon's residence Yoon had been holed up for weeks - investigators tried to arrest him earlier this month but failed This marks the first time in South Korea's history that a sitting president has been arrested Yoon's impeachment trial, which will decide if he is removed from office, started yesterday but ended within four minutes because of his absence